James e



UNiTEn sfrkrns PATENT onirica.

JAMES E. MALLORY, OF NEW YORK, N. Y.

PAPER-CUTTING MACHINE.

Specification of Letters Patent No. 9,276, dated September 21, 1852.

To all whom t may concern Be it known that I, JAMES E. MALLORY, of thecity, county, and State of New York, have invented a certain new anduseful Improvement in Machines for Cutting Paper; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, making apartl of this specification, in which- Figure 1, is a front elevation ofthe machine, and Figs. 2 and 3 vertical sections thereof, taken at thelines (A, 0,) and (B, 2),) of Fig. 1.

The same letters indicate like parts in all the figures.

My invent-ion relates to the machine for cutting paper for the use ofbook binders and others, and consists in so combining and arranging avibrating knife wit-h a movable plat-form and clamp that the paper canbe firmly held and clamped o-n the platform, and then the platformelevated to submit the paper to the action of the vibrating knife.

In the accompanying drawings (a) repi resents the main frame, and (b) ahorizontal knife extending across the frame and properly fitted to slidein recesses in the upper part of the frame. To reduce friction the kniferuns on rollers (c). The frontface of the knife is provided with tworollers (d, (L) which are acted upon by two face cams (e, e) on ahorizontal shaft (f) to give the required reciprocating motion to theknife, the said shaftbeing opera-ted by a crank handle (g) or by anyother suitable means.

The platform on which the paper to be cut is placed makes part of avertically sliding frame adapted to slide in ways in the main frame.This frame is provided with two racks (j, j) the cogs of which engagetwo cogged sectors (7c, la) on a horizontal shaft (Z) provided with ahand lever (m) by which the frame and platform can beelevated anddepressed. Below there is a set screw (n) on which this frame rests whenlet down, and by means of which the extent of the downward motion of theframe can be regulated to suit the thickness of the pile of paper to becut at any one operation.

The platform is provided with sides (o, 0,) and a back gage piece (7))which slides on the platform to bear against the back edge of a pile ofpaper, and which when vset can be secured in place by a screw boltpassing through slots (g) in the sides (o, o) and nuts on the outside.

The paper after it has been put on the platform is firmly held andclamped by a clamp bar (r) which is attached at each end to verticalbars (s, s) that slide in the same ways as the frame of the platform,and provided with cogged racks (t, t) which are engaged by the cogs oftwo pinions (u) on a horizontal shaft (o) mounted in the sliding frameand provided with a circular plate (w) with holes to receive a securingpin or bolt to fasten a hand lever (y) that turns on the said shaft (o).The object of thus connecting the hand lever with the shaft is to admitof setting the clamp to a given dist-ance from the platform for variousthicknesses of piles of paper so that the hand lever for each operationwill require to be moved only to the extent required to cla-mp thepaper. When the hand lever is brought down to clamp the paper it isthere held by a dog or catch (Z) which catches in the teeth of a sectorrack (af) attached to the sliding frame.

In this way it will be seen that a pile of paper-say for a bookbeingplaced on the platform with one edge against one of the sides and theback edge against the back rest previously set to the required gage, theoperative with one hand draws down the hand lever (y) which draws do-wnthe clamp bar and firmly clamps the paper onto the platform, with thefront face of the clamp bar in the same plane as the inner face of theknife, and as the attendant does this with one hand, with the other hedraws down the other hand lever (m) which carries the paper up againstthe knife which is kept vibrating by any desired power until it cutsentirely through the paper, the upward range of motion of the platformbeing gaged to prevent the knife from cutting into the platform. Theplatform is then let down and the clamp released, the pile of papert-urned, and the same operation repeated as often as required on thesame pile or another pile of paper. If the platform and sliding clamp,as described, in combibe suiciently Wide several piles of paper nationwith the vibrating knife, as deean be cut at one and the same time.scribed.

Having thus fully described the nature J AS. E. MALLORY. 5 of myinvention what I claim as new therein Witnesses:

and desire to secure by Letters Patent is- CARSTEN BROWNE,

The arrangement of the movable platform J. GAYLORD WELLS.

